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GSM 09.02 - Version 5.3.0 - Digital cellular telecommunications - ETSI

GSM 09.02 - Version 5.3.0 - Digital cellular telecommunications - ETSI

GSM 09.02 - Version 5.3.0 - Digital cellular telecommunications - ETSI

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Receive_Open_<br />

Cnf<br />

Wait_for<br />

SPH_result<br />

HO_CA_MESSAGE_ind,<br />

see NOTE 1<br />

[HO-Request]<br />

MAP_OPEN_req<br />

MAP_PREPARE_<br />

HANDOVER_req<br />

MAP_DELIMITER_req<br />

To MSC-B'<br />

See section 21.1<br />

Ok v1<br />

Perform<br />

MAP v1<br />

Dialogue<br />

NULL<br />

Wait_for<br />

SUB_HO_<br />

Indication<br />

Error<br />

Wait_for<br />

SUB_HO<br />

_Indication<br />

Call<br />

on<br />

MSC-B<br />

HO_CA_MESSAGE_ind,<br />

see NOTE 1,<br />

[Message transfer]<br />

MAP_FORWARD_ACCESS_<br />

SIGNALLING_req<br />

MAP_DELIMITER_req<br />

To MSC-B<br />

HO_CA_MESSAGE_ind,<br />

see NOTE 1<br />

[HO preperation result]<br />

MAP_PREPARE_SUBSEQUENT_<br />

HANDOVER_rsp<br />

MAP_DELIMITER_req<br />

To MSC-B<br />

HO_CA_ MESSAGE_req,<br />

see NOTE 1<br />

The state changes towards MSC-B' only.<br />

No changes towards MSC-B<br />

Page 339<br />

<strong>GSM</strong> <strong>09.02</strong> <strong>Version</strong> <strong>5.3.0</strong>: August 1996<br />

Check_<br />

indication<br />

Error Ok<br />

Wait for<br />

SUB_HO_<br />

Indication<br />

Receive_error<br />

from HO_CA<br />

or MSC<br />

Figure 16.2.2/1 (sheet 7 of 12): Process MSC_A_HO<br />

NULL<br />

Null,<br />

Error<br />

From MSC-B<br />

MAP_PROCESS_ACCESS_<br />

SIGNALLING_ind<br />

See section 21.2<br />

HO_CA_MESSAGE_req,<br />

see NOTE 1,<br />

[Message transfer]<br />

See section 16.2.4

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